Don’t forget ______ the door when you leave.
—He’s seldom asked to speak at the meeting, _______he_? —________, many times.
Look, There’s __________ sheep on the hill and there are _______ children, too.
--- Does your brother like going hiking on Sundays? --- No, he’d rather ______ books at home than ______ hiking.
Three _________ the students visited the museum yesterday.
The plane is a flying eye hospital that belongs to a medical charity called _______.